WO2016209179A1 - Method of barrel centrifugal surface polishing and barrel centrifugal surface polishing apparatus - Google Patents
Method of barrel centrifugal surface polishing and barrel centrifugal surface polishing apparatus Download PDFInfo
- Publication number
- WO2016209179A1 WO2016209179A1 PCT/TR2016/000059 TR2016000059W WO2016209179A1 WO 2016209179 A1 WO2016209179 A1 WO 2016209179A1 TR 2016000059 W TR2016000059 W TR 2016000059W WO 2016209179 A1 WO2016209179 A1 WO 2016209179A1
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- WIPO (PCT)
- Prior art keywords
- polishing
- grinding
- abrasive
- centrifugal
- materials
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
Definitions
- Liquid, paste and powder formed micronized abrasive and polishing materials and also granules and powders made of natural materials such as walnut shell, nutshell, corncob, hard fruit seeds, peel, rice crusts are used in polishing and grinding processes at the present time.
- Main abrasive materials have two types basically: natural and artificial. Pumice, silex, grinding wheel, natural corundum, natural diamond can be exemplified as natural abrasives.
- Process bowls of these machines have structure with many parts. Fixed upper bowls of these machines are in pipe shape and rotational dish bottom of these machines are in disc shape. Abrasives or polishing materials are kneaded with material to be processed in process bowl. Kneading effect occurs by means of rotational motion of rotational dish bottom disk and immotility of fixed upper bowl, so it is due to opponent effect. Process period of these methods are longer and grinding-polishing effect of them are less. Parts touch each other and become deformed, so a problem occurs. A fluid friction movement that is parallel to base occurs at other monoblock rotary dish, drum or bowl systems. This frictions effect is limited and its speed is low and process periods are longer.
- Process period was shortened between 10 to 100 times depending on the process. Process provides grinding, high gloss and high surface quality effect in a very short time. Even hard steel materials can be processed.
- the centrifuge speed can be more than 2500-3000 rpm and the process speed can be more than 60 meter per second.
- the process speed can be more than 120 meter per second. So the effect of centrifuge doubles. By this means, system and process gives opportunity to make grinding and polishing in an extraordinary speed.
- Our invention is provided by using only grinding materials in necessary forms and thickness, as single or mixed, through help of monoblock centrifuge and in terms of acceleration of gravity (g) by making process materials like an intensive mass by accumulating fastly at bowl interior walls in seconds.
- Minimum one special holder is used to hold the work pieces inside the machine.
- This structure of our invention is different from; vibratory surface finishing process machines; round vibrators, trough vibrators, vibrators with long radius, multichannel vibrators, horizontal vibrators, linear flow vibrators, drag finishing type systems, centrifuge surface process (disk- bowl with two partitions) machines, electro-chemical grinding (ECO), electro polishing, honing machines, lapping machines, rotary cabinet and drums, blasting and sand spun machines. And also different than processes such as grinding and polishing by hydraulic power with powders and paste, grinding and polishing by explosive gas in liquid environment, grinding and polishing in fluid condition on rotary disk emery, processes those were made by fluid abrasives in rotary dish and bowls, mirror polishing (super finishing), high polishing and similar systems.
- Granules to be used for grinding and polishing are obtained from nutshell, walnut shell, corncob, hard stones or other tree barks by processing.
- Process can be carried out as dry or wet, operation materials are choosen according to this. Beside using only grinding or polishing material in necessary form and thickness, alone or together without using any bonder, at the same time micro materials such as ceramic ball, glass ball, zirconium ball with no grinding feature has strong abrasive and polisher effect by high gravity effect and at high centrifuge speed. It is a system that provides to be an intensive mass in terms of rotary centrifuge help and centrifugal force. It makes high quality polishing or grinding on work piece with at least one piece of holding mechanism/apparatus.
- Our invention provides rapid processing of surfaces of metallic and non-metallic work pieces/parts and thereby increasing their surface quality and decreasing surface roughness by our processing method and its relevant processing machine.
- Hard metals and soft metals can be treated in the same period of time.
- the factor enabling this is that the acceleration of the gravity (g-force) is increased and so that the grinding and polishing effect of hard metals and therefore the processing time is reduced.
- a rotary pipe-type centrifuge system operating in parallel to the ground in the horizontal and roller forms can be also produced to process long pipe-like parts.
- This system also enables smaller parts to be processed one by one and consecutively in addition to long parts.
- the process can be accelerated and decelerated according to the nature of material to be processed.
- Inner surface of parts in suitable forms can be also polished. Process permeates all parts details.
- the system is general-purpose and can be used in many different manufacturing industries.
- the system is safe and secure. Volume level is 75 - 80 dBA level.
- rotary holding mechanism Abrasive or polishing materials in the form of micronized powder, granule or in the size of millimeter (6) are filled in rotary centrifugal bowl (1) forming the centrifugal force.
- Rotary centrifuge bowl (1) located on shaft (4) and roller bearing is rotated by side pulley (3), pulley (23) and electromotor (5). Rotation is controlled by a control panel (19). Rotation speed is adjusted by a potentiometer (20) and followed by a speed indicator (21 ). Rotation speed may be 3,000 RPM and over depending on the purpose.
- Rotation system of rotary centrifugal bowl (1 ) can be built with V-belt (17), side pulley (3), pulleys (23) and electromotor (5) or another rotation mechanism.
- centrifuge bowl (1) accelerates abrasive or polishing materials in the form of micronized powder or granule (6) hold on to the internal walls of centrifugal bowl (7) with centrifugal force.
- holding is strengthened and abrasive or polishing materials without any chemical binders in the form of micronized powder, granule (6) form a mass of a block.
- Centrifuge speed occurs around 2500-3000 RPM and acceleration of gravity occurs around 2000 g.
- Workpiece in proper forms suitable for the system (8) which will be grinded or polished; workpiece (8) submerged in the rotary centrifuge bowl (1) by a holding apparatus (9) and its handle (10) applied to abrasive or polishing materials in the form of micronized powder or granule (6) forming a mass of block and grinding or polishing process is started in the applied surface of the workpiece (8).
- grinding and polishing process is performed on the entire surface by providing contact on entire surface by rotating workpiece (8) left or right or rotating 360 degrees on its axis.
- Level of grinding or polishing depends on the type of abrasive or polishing materials in the form of micronized powder or granule (6), grain size and rotation speed of rotary centrifuge bowl (1 ) and workpiece (8) and processing time.
- Abrasive or polishing materials in the form of very fine structured micronized powder or granule (6) make polishing and fine grinding effect and the ones with thick grain size make a strong effect.
- Polishing or grinding process can be performed with both dry and wet. In processes with water, water is supplied by water dosing nozzle (1 1). Chemical liquid or paste dosing nozzle (12) may be used for cleaning and support in addition to water.
- Accumulated water in the rotary centrifuge bowl (1) is discharged by waste or waste water outlet (13) with wearing particles and waste or chemicals.
- the operating position of rotary centrifuge bowl (1) may be perpendicular to the ground or tilted in a certain angle or upside down.
- Abrasive or polishing materials in the form of micronized powder or granule (6) in the rotary centrifuge bowl (1) are discharged from waste water outlets (22) in smaller size.
- Our invention which is the polishing-grinding method and relevant machine are used for grinding or polishing of the surfaces with a centrifugal monoblock machine.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
This invention is related to the surface grinding-polishing method by increasing the power of gravitational acceleration (G) in centrifugal monoblock and the relevant machine. It is a system which grinding or polishing is carried out using abrasive materials without any chemical binders in the required from and thickness alone or together, with the help of monoblock rotary centrifuge and by means of centrifugal force, by means of rapidly collecting abrasives in the internal walls of the processing bowl and thereby obtaining an intensive mass and contacting the workpiece with a minimum of one holding apparatus.
Description
METHOD OF BARREL CENTRIFUGAL SURFACE POLISHING AND BARREL CENTRIFUGAL SURFACE POLISHING APPARATUS
At the present time, various forms of materials such as triangle, pyramid, cylinder and sphere that involve abrasive and polishing granules and powders inside are used as grinding and polishing media for surface finishing machines and systems. These materials are tied with a proper resin or plastic or ceramic binders in different dimensions that forms mass. These materials oblige to have a binding agent with an amount close to the abrasive amount so it can hold together.
Grinding and polishing effect is too little because of the binding agent is occupying most of the content in the material. This causes to make grinding and polishing process time longer by decreasing the surface of the abrasive material contacts onto the workpiece. Abrasive materials in granule form without a binding agent can be used to make grinding and polishing process in barrel or tumbler type surface finishing machines but in a very long process time.
In addition, natural and synthetic oils and polishing waxes contributes to polishing and grinding processes.
Liquid, paste and powder formed micronized abrasive and polishing materials and also granules and powders made of natural materials such as walnut shell, nutshell, corncob, hard fruit seeds, peel, rice crusts are used in polishing and grinding processes at the present time.
Main abrasive materials have two types basically: natural and artificial. Pumice, silex, grinding wheel, natural corundum, natural diamond can be exemplified as natural abrasives.
Aluminum oxide (corundum), normal corundum, acyl corundum, half-acyl corundum, black corundum, pink corundum, red corundum, brown corundum, aluminum oxide with micro crystal, silicium carbide, corundum with zirconium, various oxide abrasives and various carbide abrasives can be exemplified as artificial abrasives. Grinding ones of these powder and granules with grinding and polishing specification has milimetric dimension and preferred with cusp and sharp-edged micro structure, these have stronger grinding feature. Our developed monoblock centrifuge system is different than the current centrifugal and disc finishing surface finishing systems.
Process bowls of these machines have structure with many parts. Fixed upper bowls of these machines are in pipe shape and rotational dish bottom of these machines are in disc shape.
Abrasives or polishing materials are kneaded with material to be processed in process bowl. Kneading effect occurs by means of rotational motion of rotational dish bottom disk and immotility of fixed upper bowl, so it is due to opponent effect. Process period of these methods are longer and grinding-polishing effect of them are less. Parts touch each other and become deformed, so a problem occurs. A fluid friction movement that is parallel to base occurs at other monoblock rotary dish, drum or bowl systems. This frictions effect is limited and its speed is low and process periods are longer.
Method we found and the machine that enables this method is faster than all similar systems. Process period was shortened between 10 to 100 times depending on the process. Process provides grinding, high gloss and high surface quality effect in a very short time. Even hard steel materials can be processed.
Alone the centrifuge speed can be more than 2500-3000 rpm and the process speed can be more than 60 meter per second.
If the work pieces to be processed inside the processing area are turned in the opposite direction of the centrifuge bowl, then the process speed can be more than 120 meter per second. So the effect of centrifuge doubles. By this means, system and process gives opportunity to make grinding and polishing in an extraordinary speed.
This speed is even more than grinding and polishing brush rotating systems with electric motors. System has no alternative because of this feature. Gravitational acceleration that originates from high centrifuge speed occurs at 2000 g and more. By means of this strong effect, processing in a few minutes is made possible by increasing contact and pressure on even too hard work pieces (61 -63 HRC). Soft metals can be polished and grinded in seconds. At the same time, our method gives a solution to processes that take a long time with other processing methods.
Our invention is provided by using only grinding materials in necessary forms and thickness, as single or mixed, through help of monoblock centrifuge and in terms of acceleration of gravity (g) by making process materials like an intensive mass by accumulating fastly at bowl interior walls in seconds. Minimum one special holder is used to hold the work pieces inside the machine.
Grinding or polishing made by this method is giving a much more stronger effect.
This way there are no risk of faulty workmanship like in the brush finishing systems with hand controlled systems. Therefore a homogeneous effect is obtained on all contacting surfaces of work piece. Materials those can be processed in the system are (as work pieces to be finished); iron, steel, hard steel, chrome steel, bronze, aluminum, xamac, titanium, hard ceramics, technical ceramics, plastics, materials manufactured from tree, gold, silver, semi-precious stones, marble, travertine and similar.
This structure of our invention is different from; vibratory surface finishing process machines; round vibrators, trough vibrators, vibrators with long radius, multichannel vibrators, horizontal vibrators, linear flow vibrators, drag finishing type systems, centrifuge surface process (disk- bowl with two partitions) machines, electro-chemical grinding (ECO), electro polishing, honing machines, lapping machines, rotary cabinet and drums, blasting and sand spun machines. And also different than processes such as grinding and polishing by hydraulic power with powders and paste, grinding and polishing by explosive gas in liquid environment, grinding and polishing in fluid condition on rotary disk emery, processes those were made by fluid abrasives in rotary dish and bowls, mirror polishing (super finishing), high polishing and similar systems.
More qualified and faster grinding or polishing results are obtained than all other similar systems and processes. Parts to be processed don't have a risk to become deformed by the reason of avoiding to contact each other. In the meantime, of process; When work piece processed in rotary centrifuge was contacted with polishing or grinding materials, a kind of brush effect is created. In the meantime of this contact; abrasive and polisher materials and their particles grind or polish work piece very fast with no strike by spreading. Abrasive or polisher granules or particles those left from block by the effect of this pressure return to centrifuge bowl internal parts with a speed under a second of time.
Granules to be used for grinding and polishing are obtained from nutshell, walnut shell, corncob, hard stones or other tree barks by processing.
Grinding granules, plastic granule or micro ceramic ball, micro ceramic ball, micro glass globe, micro zirconium ball, micronized abrasive powder, bronze and other metal shavings, polishing and grinding pastes, chemical liquid abrasives, polisher and cleaners can be used in this process.
Process can be carried out as dry or wet, operation materials are choosen according to this. Beside using only grinding or polishing material in necessary form and thickness, alone or
together without using any bonder, at the same time micro materials such as ceramic ball, glass ball, zirconium ball with no grinding feature has strong abrasive and polisher effect by high gravity effect and at high centrifuge speed. It is a system that provides to be an intensive mass in terms of rotary centrifuge help and centrifugal force. It makes high quality polishing or grinding on work piece with at least one piece of holding mechanism/apparatus.
Our invention provides rapid processing of surfaces of metallic and non-metallic work pieces/parts and thereby increasing their surface quality and decreasing surface roughness by our processing method and its relevant processing machine.
It is possible to treat any kind of soft and hard metal with this system. Hard metals and soft metals can be treated in the same period of time. The factor enabling this is that the acceleration of the gravity (g-force) is increased and so that the grinding and polishing effect of hard metals and therefore the processing time is reduced.
Using abrasives without any chemical binders in the system or grinding without using any abrasive material thereby reduces the environmental waste to minimum. This situation also provides cost savings because it reduces the consumption of material.
Besides making the abrasion process using an abrasive material, it is also possible to grind and polish even very hard steel (61-63 HRC) workpieces with just water and ceramics, porcelain and other micro-size (1.5 mm and below) nonabrasive materials.
Systems and processes come forward by this abrasion effect obtained with water without using abrasive and take a privileged position.
Grinding and polishing processes are performed simultaneously and in a single operation. Systems and processes enable the processing of small, medium and large size work pieces.
A rotary pipe-type centrifuge system operating in parallel to the ground in the horizontal and roller forms can be also produced to process long pipe-like parts.
This system also enables smaller parts to be processed one by one and consecutively in addition to long parts. The process can be accelerated and decelerated according to the nature of material to be processed.
Inner surface of parts in suitable forms can be also polished. Process permeates all parts details.
The system is general-purpose and can be used in many different manufacturing industries. The system is safe and secure. Volume level is 75 - 80 dBA level.
For a better explanation of the invention;
In Figure 1 ; Single-process detail view of our invention, and,
In Figure 2; Multi-process detail view of our invention is expressed and
the numbers and their meanings are as follows;
1) rotary centrifuge bowl
2) roller bearing
3) side pulley
4) shaft
5) electromotor
6) abrasive or polishing materials in the form of micronized powder or granule
7) internal walls of centrifugal bowl
8) workpiece to be processed
9) holding apparatus
10) handle
11) water dosing nozzle
12) chemical liquid or paste dosing nozzle
13) waste or waste water outlet
14) chassis
15) washing and cleaning nozzle
16) bearing
17) V-belts
18) protection cover
19) control panel
20) potentiometer (speed adjustment)
21) speed indicator
22) waste water outlet ports
23) pulley
24) mobile multi-holding apparatus
25) rotary holding mechanism
Abrasive or polishing materials in the form of micronized powder, granule or in the size of millimeter (6) are filled in rotary centrifugal bowl (1) forming the centrifugal force. Rotary centrifuge bowl (1) located on shaft (4) and roller bearing is rotated by side pulley (3), pulley (23) and electromotor (5). Rotation is controlled by a control panel (19). Rotation speed is adjusted by a potentiometer (20) and followed by a speed indicator (21 ). Rotation speed may be 3,000 RPM and over depending on the purpose. Rotation system of rotary centrifugal bowl (1 ) can be built with V-belt (17), side pulley (3), pulleys (23) and electromotor (5) or another rotation mechanism. As rotary centrifuge bowl (1) accelerates abrasive or polishing materials in the form of micronized powder or granule (6) hold on to the internal walls of centrifugal bowl (7) with centrifugal force. Depending on the speed, holding is strengthened and abrasive or polishing materials without any chemical binders in the form of micronized powder, granule (6) form a mass of a block. Centrifuge speed occurs around 2500-3000 RPM and acceleration of gravity occurs around 2000 g. Workpiece in proper forms suitable for the system (8), which will be grinded or polished; workpiece (8) submerged in the rotary centrifuge bowl (1) by a holding apparatus (9) and its handle (10) applied to abrasive or polishing materials in the form of micronized powder or granule (6) forming a mass of block and grinding or polishing process is started in the applied surface of the workpiece (8). In the meantime, grinding and polishing process is performed on the entire surface by providing contact on entire surface by rotating workpiece (8) left or right or rotating 360 degrees on its axis. Level of grinding or polishing depends on the type of abrasive or polishing materials in the form of micronized powder or granule (6), grain size and rotation speed of rotary centrifuge bowl (1 ) and workpiece (8) and processing time. Abrasive or polishing materials in the form of very fine structured micronized powder or granule (6) make polishing and fine grinding effect and the ones with thick grain size make a strong effect. Polishing or grinding process can be performed with both dry and wet. In processes with water, water is supplied by water dosing nozzle (1 1). Chemical liquid or paste dosing nozzle (12) may be used for cleaning and support in addition to water. Accumulated water in the rotary centrifuge bowl (1) is discharged by waste or waste water outlet (13) with wearing particles and waste or chemicals. The operating position of rotary centrifuge bowl (1) may be perpendicular to the ground or tilted in a certain angle or upside down. Abrasive or polishing materials in the form of micronized powder or granule (6) in the rotary centrifuge bowl (1) are discharged from waste water outlets (22) in smaller size.
Our invention which is the polishing-grinding method and relevant machine are used for grinding or polishing of the surfaces with a centrifugal monoblock machine.
Claims
C L A I M S
1) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" and it includes rotary centrifuge bowl (1) which is filled with abrasive or polishing materials in the form of micronized powder or granule and is located on shaft (4), roller bearing (2) and pulleys (16) where unbounded abrasive or polishing materials in the form of micronized powder or granule (6) are formed as mass by holding on to the internal walls of centrifugal bowl (7) with centrifugal force by rotating with side pulley (3) and electromotor (5).
2) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" mentioned in Claim 1 and it includes grinding and polishing process providing grinding and polishing on contact surfaces by closing up workpiece (8) submerged in the rotary centrifuge bowl (1) by a holding apparatus (9) and its handle (10) applied to abrasive or polishing materials in the form of micronized powder or granule (6) forming a mass of nearly block and grinding or polishing process and workpiece processed in the reverse direction of the surface of the workpiece (8).
3) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" mentioned in Claim 1 and it includes a control panel (19) which rotation of the rotary centrifuge bowl (1) is controlled and rotation speed is adjusted by a potentiometer (20) and followed by a speed indicator (21).
4) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" mentioned in Claim 1 and it includes waste or waste water outlet (13) discharging the water supplied from water dosing nozzle (1 ) in processes with water and particles occurring as a result of grinding with chemicals obtained from chemical liquid or paste dosing nozzle (12) for cleaning and support.
5) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" mentioned in Claim 1 and it includes waste water outlets (22) located in the rotary centrifuge bowl (1 ) discharging the smaller-size water and particles in the system and particles smaller than abrasive or polishing materials in the form of micronized powder or granule (6).
6) Our invention is "the surface grinding-polishing method by increasing the gravitational acceleration (G) of centrifugal monoblock and the relevant machine" mentioned in Claim 1 and it includes abrasive or polishing materials in the form of micronized powder or granule (6) which becomes abrasive with high level of acceleration of gravity (-2000 g) and used for polishing very hard steels (61-63 HRC) or soft steels and is different from traditional materials for surface grinding and polishing and is nonabrasive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2015/05077 | 2015-04-27 | ||
| TR201505077 | 2015-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016209179A1 true WO2016209179A1 (en) | 2016-12-29 |
Family
ID=56853780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2016/000059 WO2016209179A1 (en) | 2015-04-27 | 2016-04-26 | Method of barrel centrifugal surface polishing and barrel centrifugal surface polishing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016209179A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590891A (en) * | 2018-12-28 | 2019-04-09 | 浙江工业大学 | A kind of efficient centrifugal pump spiral case burnishing device |
| CN109664202A (en) * | 2018-12-28 | 2019-04-23 | 浙江工业大学 | Centrifugal pump spiral casing burnishing device |
| CN113352226A (en) * | 2021-05-28 | 2021-09-07 | 苏州市安派精密电子有限公司 | Vibration grinding and polishing machine capable of quickly replacing grinding materials for electroplating products |
| CN114102267A (en) * | 2020-11-28 | 2022-03-01 | 河南驼人贝斯特医疗器械有限公司 | Grinding process of puncture needle |
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| JPS5924953A (en) * | 1982-07-30 | 1984-02-08 | Toyota Motor Corp | Barrel grinding device |
| US5355638A (en) * | 1992-09-08 | 1994-10-18 | Hoffman Steve E | Traction drive centrifugal finisher |
| JP2006043578A (en) * | 2004-08-04 | 2006-02-16 | Nagao System:Kk | Planetary ball mill |
| WO2014166594A1 (en) * | 2013-04-09 | 2014-10-16 | Otec Präzisionsfinish GmbH | Method and device for the surface treatment of workpieces |
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2016
- 2016-04-26 WO PCT/TR2016/000059 patent/WO2016209179A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3570184A (en) * | 1969-02-19 | 1971-03-16 | Ultramatic Equipment Co | Rotary finishing machine having removable screen panels |
| JPS5924953A (en) * | 1982-07-30 | 1984-02-08 | Toyota Motor Corp | Barrel grinding device |
| US5355638A (en) * | 1992-09-08 | 1994-10-18 | Hoffman Steve E | Traction drive centrifugal finisher |
| JP2006043578A (en) * | 2004-08-04 | 2006-02-16 | Nagao System:Kk | Planetary ball mill |
| WO2014166594A1 (en) * | 2013-04-09 | 2014-10-16 | Otec Präzisionsfinish GmbH | Method and device for the surface treatment of workpieces |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590891A (en) * | 2018-12-28 | 2019-04-09 | 浙江工业大学 | A kind of efficient centrifugal pump spiral case burnishing device |
| CN109664202A (en) * | 2018-12-28 | 2019-04-23 | 浙江工业大学 | Centrifugal pump spiral casing burnishing device |
| CN109590891B (en) * | 2018-12-28 | 2023-09-26 | 浙江工业大学 | Efficient centrifugal pump volute polishing device |
| CN109664202B (en) * | 2018-12-28 | 2023-09-26 | 浙江工业大学 | Centrifugal pump spiral case burnishing device |
| CN114102267A (en) * | 2020-11-28 | 2022-03-01 | 河南驼人贝斯特医疗器械有限公司 | Grinding process of puncture needle |
| CN113352226A (en) * | 2021-05-28 | 2021-09-07 | 苏州市安派精密电子有限公司 | Vibration grinding and polishing machine capable of quickly replacing grinding materials for electroplating products |
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